Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1498580 | Scripta Materialia | 2014 | 4 Pages |
Abstract
Alloying with aluminium can mitigate the hydrogen embrittlement of twinning-induced plasticity (TWIP) steels. First-principles calculations indicate a new mechanism for this observation, namely that Al atoms are weak traps for hydrogen, because of local dilation around them. This in turn allows the Al-containing steel to absorb more hydrogen, as confirmed by previously unexplained observations in the literature. Calculations using the Oriani theory show that Al can retard the diffusion of hydrogen in TWIP steel via the atomic trapping mechanism.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Eun Ju Song, H.K.D.H. Bhadeshia, Dong-Woo Suh,